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For the Inventor, By the Inventor

Tokyo, Japan

Chichibu Cement Co., Ltd.

Calculating rank
USPTO Granted Patents = 24


Forward Citations = 214

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60 inventors (with patents filed for the assignee):

goldMedal Shigeo Suda (4 out of 4 patents)

silverMedal Osamu Kodama (4 out of 4 patents)

bronzeMedal Takumi Tanikawa (4 out of 4 patents)

4.  Hideyuki Munakata (4 out of 4 patents)

5.  Zenjiro Nakai (4 out of 4 patents)

6.  Kanjiro Ishizaki (4 out of 4 patents)

7.  Keiichi Minegishi (3 out of 8 patents)

8.  Osamu Suzuki (3 out of 35 patents)

9.  Hiroshi Machida (3 out of 4 patents)

10.  Tokuji Akiba (3 out of 3 patents)

11.  Keigo Hoshikawa (2 out of 10 patents)

12.  Tadatoshi Hosokawa (2 out of 3 patents)

13.  Tsuguo Fukuda (2 out of 27 patents)

14.  Tokihiro Tsuda (2 out of 2 patents)

15.  Morizumi Fujii (2 out of 3 patents)


24 patents:

1. 5529248 - Method and apparatus for grinding material particles (1996-06-25),
2. 5458083 - Growth method for a rod form of single oxide crystal (1995-10-17),
3. 5453419 - Xenopus laevis bone morphogenetic proteins and use thereof (1995-09-26),
4. 5431124 - Rutile single crystals and their growth processes (1995-07-11),
5. 5427302 - Method of bonding and metallizing for light polarizers (1995-06-27),
6. 5408354 - Optical Isolator (1995-04-18),
7. 5369067 - Composite substrates and their production (1994-11-29),
8. 5330046 - Ceramic conveyor belt (1994-07-19),
9. 5229093 - Method for making mullite whiskers using hydrofluoric acid (1993-07-20),
10. 5194420 - Oxide super conductors (1993-03-16),
11. 5139602 - Apparatus for producing paving blocks (1992-08-18),
12. 5080750 - System for making composite blocks (1992-01-14),
13. 5051023 - Fracture-free layered paving blocks (1991-09-24),
14. 5045514 - Sol-gel method for making composite mullite/cordierite ceramics (1991-09-03),
15. 4995932 - Method for production of paving blocks (1991-02-26),
Company Overview
Chichibu Cement Co., Ltd. is a prominent player in the cement industry, specializing in the production and supply of high-quality cement products. The company is known for its commitment to innovation and sustainability, focusing on developing advanced materials that meet the evolving needs of construction and infrastructure projects. With a strong presence in Japan, Chichibu Cement emphasizes research and development in cement technology, aiming to enhance performance and reduce environmental impact in its operations.
Profile summary synthesized from public USPTO records and patent filings.

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USPTO Data Jan 1 1976 - Nov 3 2026

24 Patents

#1,215 in Tokyo

#2,636 in Japan

#26,716 in the World

Tokyo, JP
Tokyo, Japan

Chichibu Cement Co., Ltd.

Forward Citations = 214

60 inventors:

goldMedal Shigeo Suda (4 out of 4 patents)

silverMedal Osamu Kodama (4 out of 4 patents)

bronzeMedal Takumi Tanikawa (4 out of 4 patents)

4.  Hideyuki Munakata (4 out of 4 patents)

5.  Zenjiro Nakai (4 out of 4 patents)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Chichibu Cement Co., Ltd.. Retrieved from https://idiyas.com/company/chichibu-cement-company

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

Data Sources: USPTO Patent Grant XML, Patent Center, EPO & CIPO • Normalized by IDiyas Innovation Graph. Methodology & provenance architecturePlease report any incorrect information to [email protected]
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